..These results suggest that humans who have had previous hypoxic exposure adapt sooner to hypoxic condition due to an increase in the magnitude of hyperventilation in the first few days of a series of reexposures to hypoxia...

..2%) or hyperoxia (6.7%). These results demonstrate that quadriceps muscle fatigability during isolated muscle exercise is exacerbated in acute hypoxia, and these effects are independent of the relative exercise intensity...

..Therefore, we hypothesized that the difference in muscle deoxygenation between normoxia and hypoxia would be small during sustained exercise compared with intermittent exercise and that this may contribute to the inconsistent findings...

..After detraining, HVR returned to the pretraining level in both groups. These results suggest that ventilatory chemosensitivity to hypoxia is more variable by endurance training and detraining than that to hypercapnia...

Cardiovascular response to hypoxia after endurance training at altitude and sea level and after detraining

..Initial ventilatory and heart rate responses to voluntary exercise were attenuated after bed rest but showed no change after suspension or during passive movements, suggesting the minimal role of peripheral neural reflex...

Ventilatory and circulatory responses at the onset of voluntary exercise and passive movement in children

..Similar tendencies were observed in the passive movements. It is concluded that the elderly show slower ventilatory response and attenuated circulatory response at the onset of dynamic voluntary exercise and passive movements...

The effect of the amount of eccentric exercise on ventilatory response at the onset of exercise

Keisho KatayamaThe John Rankin Laboratory of Pulmonary Medicine, Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53706, USAJ Appl Physiol 103:1942-9. 2007

..We conclude that 3-wk CIH reduced the sensitivity of the ventilatory response to transient hypocapnia and thereby increased the CO(2) reserve, i.e., the propensity for apnea was reduced...

Cardiorespiratory responses to hypoxia and hypercapnia at rest in vocalists

..It is concluded that sprinters show slowed heart rate response at the onset of voluntary exercise, and attenuated ventilatory and slowed heart rate responses at the onset of passive movement as compared with untrained subjects...

Ventilatory and circulatory responses at the onset of dominant and non-dominant limb exercise

..It was concluded that initial hyperpnea, which occurred during arm exercise in DOMS, was enhanced, and from examining the result of PAS, enhanced initial exercise hyperpnea may be due in part to an exaggerated peripheral neural reflex...

..These results suggest that the activation of horizontal semicircular canals is one causal factor of ventilatory response at the onset of exercise with rotational movement in healthy subjects, but heart rate response is not...

Effect of cycling experience and pedal cadence on the near-infrared spectroscopy parameters